Category Archives: E.coli

USA – E.coli Outbreak Investigations Include Ice Tea

Online AthensEcoli Istock

Public health officials are investigating iced tea among other menu items at a Stephens County barbecue restaurant as the possible source of a major E. coli outbreak that has sickened as many as 18 people.

Eleven people have been confirmed to have E. coli infection, and seven others are probable cases, though their illness has not been confirmed by lab results, state officials say.

There have been no other infections reported since May 8.

RASFF Alerts – Shiga Toxin E.coli – Beef

RASFF – Shigatoxin-producing Escherichia coli (presence /25g) in bovine meat (Bos taurus) from Argentina in the Netherlands

RASFF -Shigatoxin-producing Escherichia coli in chilled boneless beef (Bos taurus) from Argentina in the Netherlands

RASFF – Shigatoxin-producing Escherichia coli in bovine meat from Belgium

RASFF Alerts – Campylobacter in Dill – Listeria monocytogenes in Sushi and Mackarel – Histamine in Achovies – E.coli in Clams

RASFF – Campylobacter (presence /25g) in fresh dill from Italy in Norway

RASFF – Listeria monocytogenes (<100 /g) in chilled sushi from Germany in the Netherlands

RASFF– Listeria monocytogenes (presence /25g) in chilled vacuum-packed smoked mackerel from Poland

RASFF -Histamine (290; 4200 mg/kg – ppm) in anchovies in olive oil from Spain in Switzerland

RASFF – Too high count of Escherichia coli (1.300 MPN/100g) in chilled clams from Portugal in Spain

RASFF – Too high count of Escherichia coli (13000 MPN/100g) in chilled clams (Venus gallina) from Italy

RASFF – Too high count of Escherichia coli (330 MPN/100g) in chilled clams (Venus gallina) from Italy

 

Research – Retrospective Analysis of Salmonella, Campylobacter, Escherichia coli, and Enterococcus in Animal Feed Ingredients

Liebert Online

The presence and antimicrobial susceptibility of foodborne pathogens and indicator organisms in animal feed are not well understood. In this study, a total of 201 feed ingredient samples (animal byproducts, n=122; plant byproducts, n=79) were collected in 2002 and 2003 from representative rendering plants and the oilseed (or cereal grain) industry across the United States. The occurrence and antimicrobial susceptibility of four bacterial genera (Salmonella, Campylobacter, Escherichia coli, and Enterococcus) were determined. Salmonella isolates were further characterized by serotyping and pulsed-field gel electrophoresis (PFGE). None of the samples yielded Campylobacter or E. coli O157:H7, whereas Salmonella, generic E. coli, and Enterococcus were present in 22.9%, 39.3%, and 86.6% of samples, respectively. A large percentage (47.8%) of Salmonella-positive samples harbored two serovars, and the vast majority (88.4%) of Enterococcus isolates were E. faecium. Animal byproducts had a significantly higher Salmonella contamination rate (34.4%) than plant byproducts (5.1%) (p<0.05). Among 74 Salmonella isolates recovered, 27 serovars and 55 PFGE patterns were identified; all were pan-susceptible to 17 antimicrobials tested. E. coli isolates (n=131) demonstrated similar susceptibility to these antimicrobials except for tetracycline (15.3% resistance), sulfamethoxazole (7.6%), streptomycin (4.6%), ampicillin (3.8%), and nalidixic acid (1.5%). Enterococcus isolates (n=362) were also resistant to five of 17 antimicrobials tested, ranging from 1.1% to penicillin to 14.6% to tetracycline. Resistance rates were generally higher among isolates recovered from animal byproducts. Taken together, our findings suggest that diverse populations of Salmonella, E. coli, and Enterococcus are commonly present in animal feed ingredients, but antimicrobial resistance is not common. Future large-scale studies to monitor these pathogenic and indicator organisms in feed commodities is warranted.

RASFF Alerts – STEC E.coli – Enterobactericeae – Beef – Animal Feed

RASFF – Shigatoxin-producing Escherichia coli (presence /25g) in chilled beef from Argentina in the Netherlands

RASFF – High count of Enterobacteriaceae (2400 CFU/g) in bovine lung from Germany in Austria

 

Research – Natural Gut Flora Protection Against E.coli O157

Science Daily

A cocktail of non-pathogenic bacteria naturally occurring in the digestive tract of healthy humans can protect against a potentially lethal E. coli infection in animal models according to research presented today at the 113th General Meeting of the American Society for Microbiology. The research, conducted by scientists at the University of Michigan Medical School in Ann Arbor, could have important implications for the prevention or even treatment of this disease.

USA Research – Food Testing Laboratory Accuracy?

Medical Express

Food microbiology laboratories continue to submit false negative results and false positive results on a routine basis. A retrospective study of nearly 40,000 proficiency test results over the past 14 years, presented today at the 113th General Meeting of the American Society for Microbiology, examined the ability of food laboratories to detect or rule out the presence of Escherichia coli O157:H7, Salmonella, Listeria monocytogenes, and Campylobacter.

The study found that, on average, food laboratories report false negatives of 9.1% for Campylobacter, a bacterial foodborne illness that may cause bloody diarrhea, cramping and fever, and 4.9% for Salmonella, a bacteria that may cause diarrhea, fever and abdominal cramps sometimes leading to hospitalization or death. The false positive rate, on average, is 3.9% for Salmonella, and 2.5% for both E. coli and L. monocytogenes.

 

RASFF Alerts – E.coli – Lamb Meal – Beef – Clams – Centella

RASFF – Too high count of Enterobacteriaceae (300;510;470;370;340 CFU/g) in lamb meal from the Netherlands, with raw material from New Zealand in Belgium

RASFF – Shigatoxin-producing Escherichia coli (presence /25g) in boneless beef meat  (Bos taurus) from Uruguay in Spain

RASFF – Too high count of Escherichia coli (9200 MPN/100g) in clams from Italy

RASFF – high count of Escherichia coli (2600 CFU/100g) in centella (Centella asiatica) from Sri Lanka

 

USA – E.coli O157:H7 Outbreak

Food Safety NewsEcoli Istock

At least seven people in Stephens County, Ga., have fallen ill with E. coli in the last several weeks, leading health officials in the area to begin investigating the source of the outbreak, local radio station WNEG reports.

Two of the patients were hospitalized and are now recovering. Most of the seven sickened have been confirmed to have E. coli O157:H7.

Research – Study Pinpoints Pathogens Causing Biggest Diarrhea Burden in Kids

CIDRAP

While many pathogens cause serious diarrhea in children in developing countries, four stand out as culprits in most of the infections, a finding that could drive new prevention strategies, an international research team reported today.

The group spent 3 years in seven developing countries, collecting health information, lab samples, and outcome data on 3,439 youngsters who had moderate-to-severe diarrhea. They published their findings today in an early online release from The Lancet.

On a global scale each year, diarrheal diseases kill about 800,000 children under age 5, most of them in sub-Saharan Africa and southern Asia, according to the report.

Though interventions such as rotavirus vaccines are starting to have an impact on deaths and disease incidence, scientific data to guide other strategies to curb the diseases are scarce, especially in regions where child deaths are the highest, the group wrote.

To fill the gap, the team focused their analysis on kids under age 5 who did and didn’t have moderate-to-severe diarrhea in selected cities in Bangladesh, Gambia, India, Kenya, Mali, Mozambique, and Pakistan. The study included 13,129 matched controls.

The researchers collected clinical and epidemiologic information, took anthropometric measurements, and took fecal samples to identify pathogens. For each child they made a follow-up home visit 60 days later to assess health status, clinical outcome, and growth measures.

Four pathogens were the most common causes of diarrhea across all sites: rotavirus, Cryptosporidium, enterotoxigenic Escherichia coli (ETEC) producing heat-stable toxin (ST), and Shigella, according to the study.